Read Sharp CD-BA250 (serv.man6) Service Manual online
CD-BA250H/CD-BA2600H
– 24 –
A
B
C
D
E
F
G
H
1
2
3
4
5
6
• NOTES ON SCHEMATIC DIAGRAM can be found on page 39.
Figure 24 SCHEMATIC DIAGRAM (3/9)
0.7 V
0 V
0 V
0 V
0.7 V
0 V
0 V
0 V
0 V
0 V
0 V
0.7 V
0.7 V
0 V
0 V
0 V
0 V
0 V
0.7 V
0.7 V
0
9.3 V
8.6 V
9.3 V
0 V
2
1
3
1
2
3
3.4 V
3.4 V
0 V
0 V
0 V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
17
18
19
20
21
MAIN PWB-A1(1/3)
TO POWER SECTION
P26 1-G
TO CD SERVO PWB
P23 12-C
CNP7
A_GND
M_GND
ERASE
T2_R2
T2_R1
T2_L1
T2_L2
1
2
3
4
5
6
7
T1_R
T1_L
A_GND
3
2
1
–15 V
VF1
VF2
–VP
P_IN
M_+12 V
A+10 V
GND
GND
SW_5 V
L-CH
R-CH
SW_5 V
SW_5 V
GND
GND
GND
SP_RLY
SP_DET
(A_+B)
CD_+B
A_+B
CD_+B
CD_GND
L-CH
A_GND
R-CH
3
4
5
6
1
2
6
5
4
3
2
1
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CD
TUNER
DECK
AUX
DI
CE
VSS
LOUT
LBASS
LTRE
LIN
L4
L3
L2
L1
CLK
VDD
VREF
ROUT
RBASS
RTRE
RIN
RSEL0
R4
R3
R2
R1
INTERFACE
CCB
+
–
+
–
–
+
-
+
–
+
–
+
–
+
-
+
–
LSEL0
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
L
R
Vcc
ALC
GND
ALC
RIPPLE
Nor/CrO2
–
+
–
+
Hich=T1
+ +
–
–
Hich=CHROME
56K
112K
56K
112K
L
R
REC_R
+B
+B
+B
+B
+B
+B
-B
-B
IC101
AN7345K
3
2
1
7
6
5
4
3
2
1
TAPE2
RECORD/
PLAYBACK HEAD
ERASE HEAD
R-CH
L-CH
TAPE1
PLAYBACK HEAD
L-CH
R-CH
Q112~Q114 : SWITCHING
Q101~Q106 : SWITCHING
Q107,Q108 : MUTING
C651
220P
C652
220P
C650
220P
C121 0.022
R146
10K
C141 100/16
R149
150
C133 22/50
C134 220/10
C603
22/50
R60
3.9K
R602
1K
R618
330
R619
330
BI601
CNS601
R604
10K
C610
1/50
C135
0
022
C601 220/16
C612
0.0027
C614
1/50
C616
4.7/50
C618
1/50
C620
1/50
C624
1/50
C622
1/50
R601
1K
R621 22K
C639 1/50
R614 3.3K
R615 3.3K
R611
2.2K
Q601
KTC3199 GR
R613 390
C636
0.001
R610
2.2K
Q602
KTC3199 GR
R612
390
C635
0.001
R620 22K
C640 22/50
Q604
KTC3199 GR
Q603
KTC3199 GR
C637
0.001
C638
0.001
R616
2.2K
R617
2.2K
CNP102
C106 560P
R130 1.5K
R112 15K
C108
330P
330P
Q102
2SC1845 F
Q104
2SC1845 F
Q112
KTA1266 GR
Q101
2SC1845 F
R103
2.2K
R106
3.3K
R104
2.2K
R105
3.3K
Q103
2SC1845 F
R119
3.9K
R117
100K
R139
10K
Q107
KTC3199 GR
R138
10K
Q108
KTC3199 GR
R147
10K
C136
0.022
Q113
KRC104 M
R111
15K
C113
0.033
R123
5.6K
C117 47/25
C115 560P
C111
100/25
R120
3.9K
R118
100K
R124
5.6K
C114
0.033
C116
560P
C118 47/25
R116
56
C112
100/25
R126 3.9K
R122 33K
C120 0.0022
R121 33K
C119 0.0022
R127 3.9K
R125 68K
R132
100
C127 0.022
C123 270P
C126
22/50
L102
2.2
µ
H
C128 0.022
C130 0.0033
R102
1K
Q114
KRC104 M
R128 6.8K
C122 3.3/50
R129 6.8K
C131 47/25
C129 0.0033
R133 100
C125
22/50
R131 1.5K
C101
560P
R101
1K
C132
47/25
C103
180P
C104
180P
R107 47K
C102
560P
C124 270P
R114
1K
R109 4.7K
C105 560P
R137
220K
R148
4.7K
C110
330P
Q106 KTC3199 GR
R134
10K
R110 4.7K
L101 2.2
µ
H
R113
1K
C109
330P
C107
330P
330P
Q105
KTC3199 GR
R135 10K
R115
56
R108 47K
C623
1/50
C621
1/50
C619
1/50
C617
1/50
C615
4.7/50
C613
1/50
C605
0.15
C607
0.1
C626
0.0056
R608
1.2K
R606
3.9K
C608
0.1
C606 0.15
CNP101
IC101
AN7345K
PLAYBACK AND RECORD/
PLAYBACK AMP.
IC601
LC75341
AUDIO PROCESSOR
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